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  1. Dietary preference of dairy heifers grazing ryegrass and white clover, with and without an anti-bloat treatment

    Contributor(s):: Rutter, S. M., Orr, R. J., Yarrow, N. H., Champion, R. A.

    The effect of an antibloat treatment on the dietary preference of nonpregnant Holstein x Friesian heifers for ryegrass and white clover was studied. Eight groups of two heifers grazed 0.51 ha plots containing adjacent monocultures of grass alongside clover with either 25 or 75% clover (by ground...

  2. Diurnal patterns of intake rate by sheep grazing monocultures of ryegrass or white clover

    Contributor(s):: Orr, R. J., Penning, P. D., Harvey, A., Champion, R. A.

    The effects of time of day on the ingestive behaviour of groups of 5 sheep grazing monocultures of ryegrass (Lolium perenne cv. Parcour) or white clover (Trifolium repens cv. Kent Wild White), were measured over periods of 1 h starting at 07.30, 11.30, 15.30 and 19.30 h in August 1993. Grazing...

  3. Ingestive behaviour of heifers grazing monocultures of ryegrass or white clover

    Contributor(s):: Rutter, S. M., Orr, R. J., Penning, P. D., Yarrow, N. H., Champion, R. A.

    The ingestive behaviour of dairy heifers grazing monocultures of either perennial ryegrass or white clover was characterized. Two different types of jaw movements were characterized: bites (i.e. when herbage was gathered in the mouth and then severed) and chews (i.e. when herbage severed by a...

  4. Intake rate during meals and meal duration for sheep in different hunger states, grazing grass or white clover swards

    Contributor(s):: Orr, R. J., Penning, P. D., Rutter, S. M., Champion, R. A., Harvey, A., Rook, A. J.

    Meal patterns and rates of feed intake by grazing herbivores may be markedly different from those found in housed ruminants and monogastrics. Cumulative intakes over the evening meal (satiety curves) were measured using groups of sheep (Ovis aries) grazing monocultures of white clover (Trifolium...

  5. Feed preference by Baladi goats

    Contributor(s):: Abdel-Moneim, A. Y., Abd-Alla, M. S.

    Eight adult (24-48 months) and 8 juvenile (6-12 months) Baladi does were maintained on a diet of Egyptian clover (Trifolium alexandrinum) or darawa (Zea mays) supplemented with concentrates. After an overnight starve, goats were given the choice of 2 green forages (clover, darawa and sorghum...

  6. Intake and selection for white clover by grazing lambs in response to gastrointestinal parasitism

    Contributor(s):: Cosgrove, G. P., Niezen, J. H.

    A study was conducted at Palmerston North, New Zealand to determine if lambs grazing at pasture would enhance their nutrient intake in response to parasitism, by selecting more white clover from a mixed grass-clover pasture. The trial used a split-plot design with two grass-clover mixtures as...

  7. Use of cues by grazing animals to locate food patches: an example with sheep

    Contributor(s):: Edwards, G. R., Newman, J. A., Parsons, A. J., Krebs, J. R.

    The ability of sheep to form spatial associations between 2 cues and 2 feed rewards and to distinguish between the cues prior to grazing them was examined. At 12 locations within a long, thin field, individual sheep chose between a pair of patches (plastic bowls) containing preferred (cereal...

  8. The influence of shape of paddock, type of fence and stocking rate on grazing behaviour and social facilitation in Merino sheep

    Contributor(s):: Lynch, J. J., Hedges, D. A.

    Grazing behaviour trials were carried out between Oct. 1964 and Sept. 1965 with Merino ewes, 18 months old, in paddocks on a predominantly Phalaris aquatica/white clover pasture with some perennial ryegrass, tall fescue and subterranean clover. It was concluded that grazing patterns adopted by...

  9. Effect of previous grazing experience on the grazing behaviour of lambs

    Contributor(s):: Ramos, A., Tennessen, T.

    Forty crossbred lambs with their dams were exposed to Trifolium repens or Lolium multiflorum pastures for 7 d, 1 h/d at 14 weeks (before weaning or) at 19 weeks of age (during weaning). This constituted the only grazing experience of the lambs. Ten lambs not exposed to pasture comprised the...

  10. Stochastic models of grazing behaviour in sheep

    Contributor(s):: Rook, A. J., Penning, P. D.

    Three models, the multinomial, the Markov process and the age-dependent process, were used to simulate the behaviour of grazing sheep. Data were compared with data for sheep grazing perennial ryegrass (Lolium perenne) or white clover (Trifolium repens) pastures. The Markov process gave an...

  11. Synchronisation of eating, ruminating and idling activity by grazing sheep

    Contributor(s):: Rook, A. J., Penning, P. D.

    The synchronization of eating, ruminating and idling activity of groups of 7 non-lactating ewes grazing on grass or clover pastures was studied. Synchronization was the proportion of the number of pairs of sheep engaged in a common activity to the total possible number of pairs and was compared...

  12. Changes in ingestive behaviour of yearling dairy heifers due to changes in sward state during grazing down of rotationally stocked ryegrass or white clover pastures

    Contributor(s):: Orr, R. J., Rutter, S. M., Yarrow, N. H., Champion, R. A., Rook, A. J.

    A group of 12 Holstein x Friesian heifers were rotationally stocked in sequence on uninterrupted spring growths and regrowths following cutting of perennial ryegrass and then on regrowths of white clover. Measurements of ingestive behaviour and plant factors were made every 2-3 days during four...

  13. Intake and behaviour responses by sheep, in different physiological states, when grazing monocultures of grass or white clover

    Contributor(s):: Penning, P. D., Parsons, A. J., Orr, R. J., Harvey, A., Champion, R. A.

    Monocultures of ryegrass (Lolium perenne) and white clover (Trifolium repens) were maintained at sward surface heights of 3 or 6 cm by continuous variable stocking with groups of sheep. Each group contained 4 lactating ewes, and their twin lambs, plus 2, non-pregnant ewes. Each plot was 0.33 ha...

  14. Patterns of ingestive behaviours of sheep continuously stocked on monocultures of ryegrass or white clover

    Contributor(s):: Penning, P. D., Rook, A. J., Orr, R. J.

    The ingestive behaviour of non-lactating ewes continuously stocked on monocultures of white clover (Trifolium repens) or perennial ryegrass (Lolium perenne) maintained at a sward height of 6 cm was recorded. Ewes on the clover sward spent significantly less time grazing and ruminating and longer...

  15. Amount and diurnal distribution of grazing time by stocker cattle under different tall fescue management strategies

    Contributor(s):: Coffey, K. P., Moyer, J. L., Brazle, F. K., Lomas, L. W.

    The effects of endophyte level, ladino clover interseeding, grazing management or supplemental antibiotics on stocker cattle performance and the amount and diurnal distribution of grazing time by stocker cattle on tall fescue (Festuca arundinacea) pastures was evaluated. Grazing time was measured...

  16. Eating behaviour of dairy cows offered fresh or ensiled white clover, red clover and ryegrass to choose from or in a mixture

    | Contributor(s):: Dorland, H. A. van, Kreuzer, M., Leuenberger, H., Wettstein, H. R.

    Two experiments with 24 lactating cows each were conducted in a group housing system to study the influence of feeding method (choice diets versus mixed diets) and forage species (white clover, red clover, ryegrass) both in fresh (experiment 1) and in ensiled form (experiment 2) in order to gain...

  17. Motivation of sheep to eat clover offered in a short-term closed economy test

    | Contributor(s):: Champion, R. A., Lagstrom, N. A., Rook, A. J.

    Six sheep were trained, over a period of 11 weeks, to work for a reward of freshly cut clover by walking along a variable length, U-shaped race. Training included habituation to the presence of an observer and to isolation from conspecifics. Following training, motivation to eat clover was tested...

  18. Selection of feeding sites by horses at pasture: testing the anti-parasite theory

    | Contributor(s):: Fleurance, G., Duncan, P., Fritz, H., Cabaret, J., Cortet, J., Gordon, I. J.

    Management of grazed grasslands for production and/or conservation objectives requires a thorough understanding of the choices of feeding sites by herbivores, and of the biological processes involved. Most models of the feeding strategies of herbivores are based on the principle that optimising...

  19. The effect of stocking rate on the grazing behaviour of Corriedale sheep

    | Contributor(s):: Birrell, H. A.

    The seasonal variation in the diurnal pattern of grazing, the number of grazing periods each day and the mean intake for each period were assessed at 4 stocking rates (10, 25, 20 and 25 sheep/ha) of Corriedale wethers grazing a mixed pasture of Lolium perenne and Trifolium subterraneum. Most...

  20. The effect of the spatial scale of heterogeneity of two herbage species on the grazing behaviour of lactating sheep

    | Contributor(s):: Champion, R. A., Orr, R. J., Penning, P. D., Rutter, S. M.

    The benefits of including clover in sheep pasture are well known, this study investigates a method to enhance these benefits by facilitating diet selection. Lactating ewes and their twin lambs grazed ryegrass (G; Lolium perenne cultivar 'Parcour') and white clover (C; Trifolium repens cultivar...